A High-Order Double Network Hydrogel
Rattachement africain : cn, hk. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
Natural hydrogels, such as cartilage, have a multiscale hierarchical structure composed of multiple modulus-contrasting building blocks, bringing about their extraordinary mechanical properties. Conventional tough engineering hydrogels, such as Double Network (DN) hydrogel, lack cartilage’s high-order aggregated structure across multiple length scales, although they have a molecular composition similar to cartilage. This work focuses on high-order architecture in DN hydrogels through superimposing microphase separation and nanocrystalline domains in interpenetrating molecular networks of stiff chitosan and soft poly(vinyl alcohol) by using freezing-thawing-assisted alkali out. The constructed High-order Double Network (HDN) architecture has a molecular composition identical to initial interpenetrating molecular networks but exhibits hierarchical multiscale discrepancies, including bicontinuous phase at microscale, nanocrystalline domains at nanoscale, and polymer chain packing at subnanoscale. We find that these structural differences are strongly correlated with the macroscopic properties of the hydrogel, such as turbidity, stiffness, strength, and toughness. We reveal the stepwise multiscale fracture mechanism of the HDN architecture that leads to a highly synergistic toughening effect. The HDN hydrogel also exhibits excellent multifunctional properties, including antiswelling, durability, biocompatibility, antibacterial activity, degradability, and plasticity. We believe that the high-order architecture presented in this work would shed new light on the future development of high-performance DN hydrogels that approximate natural hydrogels.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- A High-Order Double Network Hydrogel
- Date Crossref
- 23/11/2024
- Éditeur
- American Chemical Society (ACS)
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Hunan University Key Laboratory of Advanced Design and Simulation Techniques for Special Equipment pays non établi dans la noticeUniversité ou école supérieure
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Chinese University of Hong Kong pays non établi dans la noticeUniversité ou école supérieure
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Chinese Academy of Sciences pays non établi dans la noticeOrganisme public
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Technical Institute of Physics and Chemistry pays non établi dans la noticeStructure de recherche
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College of Materials Science and Engineering pays non établi dans la noticeUniversité ou école supérieure
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School of Biomedical Sciences pays non établi dans la noticeUniversité ou école supérieure
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Ltd. Zhuzhou Times New Materials Technology Co. pays non établi dans la noticeEntreprise
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CAS Key Laboratory of Bio-Inspired Materials and Interface Science pays non établi dans la noticeStructure de recherche
Key Laboratory of Advanced Design and Simulation Techniques for Special Equipment — Hunan University, Chinese University of Hong Kong et Chinese Academy of Sciences, avec 5 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.